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A012640 arcsinh(arcsinh(x)*cos(x))=x-5/3!*x^3+73/5!*x^5-3565/7!*x^7... 0
1, -5, 73, -3565, 337873, -53181845, 12563583641, -4158179320061, 1836546568939681, -1043609929405146661, 741652625178569817577, -644417189348695489885965, 672084091294680203529876081 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..12.

MATHEMATICA

With[{nn=30}, Take[CoefficientList[Series[ArcSinh[ArcSinh[x]Cos[x]], {x, 0, nn}], x]Range[0, nn-1]!, {2, -1, 2}]] (* Harvey P. Dale, Sep 16 2011 *)

CROSSREFS

Sequence in context: A096538 A334282 A317341 * A128889 A131958 A051156

Adjacent sequences:  A012637 A012638 A012639 * A012641 A012642 A012643

KEYWORD

sign

AUTHOR

Patrick Demichel (patrick.demichel(AT)hp.com)

STATUS

approved

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Last modified January 25 19:00 EST 2022. Contains 350572 sequences. (Running on oeis4.)